oxianus, Idus Kessler [K. F.] 1877:129 [The Aralo-Caspian Expedition; ref. 2597] Lower part of Amu Darya River, Uzbekistan. Syntypes: (3) ZIN 3665-66 (1, 1). Also on p. 124 as Squalius oxianus. •Synonym of Leuciscus idus (Linnaeus 1758), but a valid subspecies -- (Berg 1949:567 [ref. 20661], Mitrofanov et al. 1987:118 [ref. 37731], Kozhara et al. 2023:445 [632] [ref. 40779]). •Synonym of Leuciscus idus (Linnaeus 1758) -- (Kottelat 2006:39 [ref. 28831]). •Valid as Leuciscus oxianus (Kessler 1877). Current status: Valid as Leuciscus oxianus (Kessler 1877). Leuciscidae: Leuciscinae. Distribution: Central Asia: Amu Darya River basin. Habitat: freshwater.